ZStreamW_Null Class Reference

A write stream that discards all data written to it. More...

#include <ZStream.h>

Inheritance diagram for ZStreamW_Null:

List of all members.

Public Member Functions
virtual void	Imp_CopyFromDispatch (const ZStreamR &iStreamR, uint64 iCount, uint64 *oCountRead, uint64 *oCountWritten)
	Invoke iStreamR's Imp_CopyTo method.
virtual void	Imp_CopyFrom (const ZStreamR &iStreamR, uint64 iCount, uint64 *oCountRead, uint64 *oCountWritten)
	Actually copy data to this stream from iStreamR.

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Detailed Description

A write stream that discards all data written to it.

ZStreamW_Null discards all data written to it, regardless of how that data is written. It's useful as the sink of a write filter stream when you're only interested in the filter stream's side effects.

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Member Function Documentation

void ZStreamW_Null::Imp_CopyFromDispatch	(	const ZStreamR &	iStreamR,
		uint64	iCount,
		uint64 *	oCountRead,
		uint64 *	oCountWritten
	)			[virtual]

Invoke iStreamR's Imp_CopyTo method.

The first part of the two-stage dispatch initiated by ZStreamW::CopyFrom and ZStreamW::CopyAllFrom. Override if your stream's data is in memory and thus iStreamR can have its Read method called with your stream's data as its destination.

Reimplemented from ZStreamW.

void ZStreamW_Null::Imp_CopyFrom	(	const ZStreamR &	iStreamR,
		uint64	iCount,
		uint64 *	oCountRead,
		uint64 *	oCountWritten
	)			[virtual]

Actually copy data to this stream from iStreamR.

The second part of the two-stage dispatch initiated by ZStreamR::CopyTo and ZStreamR::CopyAllTo. The default implementation calls sCopyReadToWrite. Override this method if your stream's data is in memory and thus can be modified by calling iStreamR's Read method.

See also:

sCopyReadToWrite

Reimplemented from ZStreamW.

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The documentation for this class was generated from the following files:

• src/stream/ZStream.h
• src/stream/ZStream.cpp

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